US4559935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fracture cast braces
Assignee: Protectair Ltd
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Filing: 1984-06-04
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Granted: 1985-12-24
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Expires: 2004-06-04
Abstract
Abstract The head plate has a rectangular body with a central portion. The connecting portion of the flexible hinge part is integral with the central portion or the central portion is provided with a recess or slot into which the connecting portion is received. The upper and lower surfaces of the central portion of the body are substantially continuous and uninterrupted so as to provide maximum surface area for bonding to the casting material layers. The upper and lower surfaces may be provided with teeth or splines to increase the area of the bonding surfaces. In one embodiment, the head plate is provided with parallel spaced grooves on either side of the central portion to permit the head plate to move accurately to conform to the contours of the body of the patient.
Inventors
- 👤 David E. Young
- 👤 David H. Boyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:27
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; A61F13/041
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
90 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein.
Claim 2
Dependent Claim
90 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein.
Claim 3
Dependent Claim
17 words
The head plate of claim 1, further comprising means for affixing the connecting portion within said slot.
Claim 4
Dependent Claim
13 words
The head plate of claim 1, wherein said body has an arcuate cross-section.
Claim 5
Dependent Claim
25 words
The head plate of claim 1, wherein said body further comprises a peripheral section and wherein said peripheral section is thinner than said central portion.
Claim 6
Dependent Claim
27 words
The head plate of claim 1, wherein said body comprises an opening spaced from the connecting portion and extending from said lower surface to said upper surface.
Claim 7
Dependent Claim
18 words
The head plate of claim 1, wherein one of said upper and lower surfaces has a roughened exterior.
Claim 8
Dependent Claim
17 words
The head plate of claim 1, further comprising teeth on one of said upper and lower surfaces.
Claim 9
Dependent Claim
17 words
The head plate of claim 1, further comprising splines on one of said upper and lower surfaces.
Claim 10
Dependent Claim
66 words
A head plate for use with a hinge part to form a hinge brace for a fracture cast adapted to be applied to a limb or the like, the head plate comprising a body with a central portion and a peripheral portion and means for articulately connecting said peripheral portion to said central portion such that said head plate can accommodate the contours of the limb.
Claim 11
Dependent Claim
66 words
A head plate for use with a hinge part to form a hinge brace for a fracture cast adapted to be applied to a limb or the like, the head plate comprising a body with a central portion and a peripheral portion and means for articulately connecting said peripheral portion to said central portion such that said head plate can accommodate the contours of the limb.
Claim 12
Dependent Claim
41 words
The head plate of claim 9, wherein said head plate has an exterior surface and further comprising casting material engaging projections extending from said exterior surface of said head plate adjacent the connection between said central portion and said peripheral portion.
Claim 13
Dependent Claim
31 words
The head plate of claim 9, wherein said head plate has first and second peripheral portions and means for articulately connecting said peripheral portions on opposite sides of said central portion.
Claim 14
Dependent Claim
35 words
The head plate of claim 11, wherein said connecting means comprises first and second substantially parallel grooves, each of said grooves being situated between said central portion and a different one of said peripheral portions.
Claim 15
Dependent Claim
41 words
The head plate of claim 12, wherein said head plate has an exterior surface and further comprising casting material engaging projections extending from said exterior surface of said head plate adjacent the connections between said central portion and said peripheral portions.
Claim 16
Dependent Claim
115 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein, teeth on one of said upper and lower surfaces, said teeth forming two sets, the teeth of each of said sets extending in different directions.
Claim 17
Dependent Claim
115 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein, teeth on one of said upper and lower surfaces, said teeth forming two sets, the teeth of each of said sets extending in different directions.
Claim 18
Dependent Claim
115 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein, splines on one of said upper and lower surfaces, said splines forming two sets, the splines in each of said sets extending in different directions.
Claim 19
Dependent Claim
115 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a central portion having substantially continuous, uninterrupted upper and lower surfaces and a side portion, a slot formed in said central portion, within the interior of said body and opening at said side portion, said slot being of substantially the same dimension as the connecting portion and adapted to receive same therein, splines on one of said upper and lower surfaces, said splines forming two sets, the splines in each of said sets extending in different directions.
Claim 20
Dependent Claim
99 words
A head plate for use with a hinge part to form a hinge brace for a fracture cast adapted to be applied to a limb or the like, the head plate comprising a body with a central portion and a peripheral portion and means for articulately connecting said peripheral portion to said central portion such that said head plate can accommodate the contours of the limb, said connecting means comprising a groove between said central portion and said peripheral portion, said groove having a depth less than the thickness of the head plate at the location of the groove.
Claim 21
Dependent Claim
99 words
A head plate for use with a hinge part to form a hinge brace for a fracture cast adapted to be applied to a limb or the like, the head plate comprising a body with a central portion and a peripheral portion and means for articulately connecting said peripheral portion to said central portion such that said head plate can accommodate the contours of the limb, said connecting means comprising a groove between said central portion and said peripheral portion, said groove having a depth less than the thickness of the head plate at the location of the groove.
Claim 22
Dependent Claim
69 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a portion having a substantially continuous, uninterrupted surface, first and second sets of cast material engaging projections on said surface, said projections in each of said sets extending in different directions.
Claim 23
Dependent Claim
69 words
A head plate adapted to bond to casting material for use in conjunction with a flexible hinge part having a connecting portion to form a hinge brace for a fracture cast, the head plate comprising a body with a portion having a substantially continuous, uninterrupted surface, first and second sets of cast material engaging projections on said surface, said projections in each of said sets extending in different directions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |